Senior Systems Engineer
wellington
Senior Systems Engineer
cfsenergy· Systems Engineering
About this role
About Commonwealth Fusion Systems:
Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.
Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers, suppliers, and many others to build the energy industry of the future.
We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.
Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.
If that’s you and this role fits, we want to hear from you.
Join the power movement as a Senior Systems Engineer
CFS is currently looking for a Senior Systems Engineer or Systems Engineer II with a mechanical background, who will focus on implementation of Systems Engineering process and systems thinking to subsystems that form the core of the SPARC & ARC tokamaks. This role is inherently cross-disciplinary, and will require collaboration with a wide variety of stakeholders to ensure that systems are designed, integrated, and operated successfully. The Systems Engineer will be responsible for supporting a group of mechanical subsystems, working on activities throughout the development lifecycle, including requirements development, interface definition, trade studies, risk assessment and management, operational concept/control architecture development, test planning, etc. The ideal candidate for this role is comfortable with learning a variety of new technical topics and being proactive to apply that knowledge to ensure that tokamak system development and implementation is successful in validating the current SPARC mission and ARC programs.
Candidates interested in this role should have some related experience and interest in working with the following types of systems we are currently looking for support on:
- Both superconducting and non-superconducting magnet systems, or similar electromechanical systems, or:
- Complex mechanical systems subject to a variety of thermal, structural, and electrical requirements with multiple interfaces.
What you'll do:
- Elicit, decompose, and establish traceability of system requirements in a requirements database
- Support requirements driven architecture trade studies for a system
- Coordinate, define, and control interfaces between systems and their interfacing systems
- Conduct trade studies to drive/coordinate technical decision making. Present proposals for decision closures to the appropriate level of management
- Conduct risk assessments on systems using failure modes analysis software and methods, and
- ensuring that risk mitigation plans are developed and implemented
- Manage changes affecting system technical baseline for impact to scope, schedule, cost, performance, or interfacing systems
- Support design review content development and the review of other design reviews for technical maturity, consistency, and accuracy
- Develop test plans for and document evidence against requirements verification and validation Develop requirement/risk informed testing and commissioning plans
What we’re looking for:
- Bachelor's or Master's degree in Engineering, Physics, or a related field
- 7+ years of experience in Systems Engineering or other related engineering roles
- Experience working in the development of large, integrated and complex systems, preferably fusion, energy, aerospace, defense, transportation, etc.
- General knowledge of mechanical, electrical, I&C, and industrial concepts with the ability to learn and apply new technical concepts
- Strong, foundational knowledge of mechanical systems
- General knowledge of electrical engineering concepts
- Strong interpersonal and technical communication skills, with the ability to proactively engage and communicate with a wide range of stakeholders
- Experience working in an environment where creative, proactive problem solving is required with a wide range of stakeholders
Bonus points for:
- Prior experience in superconducting magnet based systems development
- Hands on integration and testing experience while leveraging Verification & Validation life cycle methods
- General knowledge of tokamak and fusion plant engineering concepts
- General knowledge in any of the following areas: high and ultra-high vacuum, materials science, electrical insulation design for high voltage applications, thermo-structural analysis techniques
- Experience with multi-objective design optimization techniques, specifically applied to architectural design of complex systems
- Model Based Systems Engineering experience, specifically utilizing SysML based tools
- Experience with technology roadmapping and development for first of a kind systems and programs
Must-have Requirements:
- Perform activities such as typing, standing, or sitting for extended periods of time
- Dedication to safety to mitigate hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics
- Willingness to travel or work required nights/weekends/on-call occasionally to support off site testing
#LI-Hybrid
At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.
We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.
Frequently Asked Questions
What is the salary for the Senior Systems Engineer role at cfsenergy?
The listed salary for this Senior Systems Engineer position at cfsenergy is USD 110K–185K. This is an Full time role.
Where is the Senior Systems Engineer position at cfsenergy located?
This Senior Systems Engineer role at cfsenergy is based in Devens, MA. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Senior Systems Engineer role at cfsenergy full-time or part-time?
This is listed as a Full time position. It is posted as a Senior Systems Engineer role in the Systems Engineering department at cfsenergy.
Which team or department does the Senior Systems Engineer at cfsenergy belong to?
This Senior Systems Engineer position is part of the Systems Engineering department at cfsenergy. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior Systems Engineer position at cfsenergy?
Click the "Apply Now" button on this page. You will be redirected to cfsenergy's official application portal hosted on lever where you can submit your application directly.
When was the Senior Systems Engineer job at cfsenergy posted?
This Senior Systems Engineer position at cfsenergy was posted on Sep 2, 2026. Apply as soon as possible — early applications are often reviewed first.
Senior Systems Engineer
cfsenergy · 💰 USD 110K–185K
You'll be redirected to cfsenergy's official application page on Lever.